Concealed hinge.



F; l. FISHER.

GONOEALED HINGE.

APPLICATION FILED JAN. 29, 1913.

Patented Apr. 15, 1913.

HiVEHTOR HTTORNEY z ontal section. of a portion of the body, a'

' UNITED- STATES PATENT OFFICE.

FRED J. FTSHER, 0F DETROIT, MICHIGAN.

To all whom it may concern:

Be it known that I, FRED J. FISHER, a citizen of the United States, residin at Detroit, county of Wayne, State of Mlchigan, have invented a certain new and'useful Improvement in Concealed Hinges, and declare the following to be a full, clear, andexact description of ,the same, such as will enable others skilled in the art to which it pertains to make and use the same, reference being had to the accompanying. drawings, which form a part of this specification.

This invention relates to concealed hinges and has for its object a concealedhinge in which a pin-carrying 'plateis releasably secured to' lthei'mortise casing and which has a tapering or wedge-like engagement with thevmortise casingso that as it is screwed into 'the mortise casing it is wedged into engagement therewith so as to be entirely free from rattling. In the drawings:--Figure'l, is -a h'oriportion of'the door and the hinge. 1s a vertical section 'on the line 2'2 of Fig. 1. Fig. 3, is ,a perspective, of the mortise casing. I Fig. 4, is a perspective of the pincarrying plate.

A represents a portion of the body and B indicates a-portion of'the door. The body is Fig. 2,

recessed for' the reception of the mortise casing 1 which comprises'a metal member which is drawn by' proper dies into the shape shown in Fig. 3, in which" the face portionis a plate and the'middle portion is rawn into the shape of'a box 'into which the-hinge arm withdraws. The plate portion is provided with suitable countersunk holes 2 for the reception of screws 3 .by which itmay be secured to the portion-A of the body. The face of the. plate 1 isre' cessedor; countersunk at 4.- on either side of the opening to the box-like portion of the caslng.

The floor and the top wall of the casing are cut away at 5 by a recess that narrows toward the rear of the casing, forming a tapering or wedge-like recess. Into this tapering or wedge-like casing fitsthe hor1- zontal portions 6' of the pin-carrying plate 7. ThlS pin-carrying plate is made of a stamping bent in'the form shown in Fig; 4,

Specification of Letters Patent.

Application filed January as, 1913. Serial No. 744,817.

given' this contour. 'thehorlzontal portions -6 of the pin-carrycasing. It

portion of the mortise CONCEALED HIIQNGE.

Patented Apr. 15, 1913.

that is, U-shaped with plate portions at the ends of the U-shaped arms. ,These plate port ons fit into the recesses or countersunk portions 4 of the plate 1 and are secured thereto by the screw studs 8. The plate portions of the pin-carrying plate and the recesses 4 are shown somewhat oval shaped, although it is not essential that they 'be It will be noticed that ing plate 7 are tapering and are of a contour complementary to that of the tapering or wedge-like recesses 5 in the floor and top wall of the box-like portion of the mortise will thus be seen that the two tapering embers having a wedging engagem. and that by tightening the screws 8 that the horizontal portion 6 may be driven and wedged intoengagement with the top wall and the floor of the box-like casing.

Inasmuch as the pin-carrying plate carri'es the 'hin' e pin 9 this member is subject to consideraile lateral strain and it is quite essential that it be made free from of rattling. This I effect by the wedge-like arrangement of the engagement of the pincarrying plate and the floor and top wall of the mortlse casing. I deem this important for it secures the twomembers together beyond the possibility of loosening so that objectionable rattle is'eliminated.

Referring to Fig. 1, it will be noticed that the contour of the hinge arm 10 and the arrangement of the hinge pin 9 is such that when the door B is in perpendicular relation with respect to the body A that the portion of the h nge arm adjacent the hinge .pin 9 lies directly against the outer wall of the mortise casing sothat this forms an efi'ective stop for the door and beyond the perpendicular plane.

What. Iclaim is 1. concealed hinge, having in combina- -tion,a mortise casing provided with a tapering recess, a pin-carrying plate securable in the mortisecasing and provided with a tapered portion that fits into the tapering.

recess of the mortise-casing so that the pincarrying plate' may be wedged into engagement with respect to the mortise casing, substantially as described'.-

prevents its swinging liability tion, a mortise caslng provided with a boxwedged into the tapering recesses of the 2. A concealed hinge having in combinal ceiling and floor of the casing, substantially as described.

like portion having a recess in the floor and 1 In testimony whereof, I sign this specifia recess in the top Wall, both or which are I cation in the presence of two witnesses. tapered and a pin-carrying plate compris- FRED J. FISHER. ing a somewhat U-shaped member having horizontal tapering portions that may be Witnesses:

STUART C. BARNES, AMELIA C. KoEnN. 

